Getting an outline with backface culling blender render
The way they achieve the outline in the show rwby is unique in that it is not rendered at all.
They use what are called "playblasts" which is a feature in maya where the animation is recorded in real time and not rendered. This is why yours is not coming out right the outline will only appear in the texture view of blender. I like to animate in this style because you can have good looking low poly character but anyway how you achieve this is:


copy object in object mode
scale the object up slightly and while in edit mode press w and select flip normals(this will cause only the inside faces to show)
give the main object a skin color and make sure the shadeless option is selected
give the outline mesh a black shadeless color and adjust in edit mode where needed


It will not come out in rendered view and will only show in texture view (still pretty cool though)